WATER-WHEEL
\wˈɔːtəwˈiːl], \wˈɔːtəwˈiːl], \w_ˈɔː_t_ə_w_ˈiː_l]\
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(Mech.) A wheel set in motion by moving water, and driving a train of machinery ; it may be either an Undershot, Overshot, or Breast wheel. The undershot wheel is driven by the impulse of the moving water against the float-boards ; in the overshotwheel the water flows from above into buckets, thereby overweighing the wheel on one side and causing it to turn ; in the breast-wheel the water flows into buckets on the lower part of the wheel, and is kept from flowing out of them by a curved trough or breast, within which the buckets move, until they have passed the lowest point.
By Henry Percy Smith
Word of the day
Platidiam
- An inorganic water-soluble platinum complex. After undergoing hydrolysis, it reacts DNA produce both intra interstrand crosslinks. These crosslinks appear to impair replication and transcription of DNA. The cytotoxicity cisplatin correlates with cellular arrest in G2 phase cell cycle.